public interface FatherMapper {
DemoEntity findById1();
DemoEntity extendMethod();
}
public interface SonMapper extends FatherMapper{
/**
* 覆盖父类的方法,这里的id为4
* @return
*/
DemoEntity extendMethod();
DemoEntity findById3();
}
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.hlj.dao.mybatis.demo.FatherMapper">
<select id="findById1" resultType="com.hlj.entity.db.demo.DemoEntity">
select * from demo_entity d where d.id = 1
</select>
<select id="extendMethod" resultType="com.hlj.entity.db.demo.DemoEntity">
select * from demo_entity d where d.id = 2
</select>
</mapper>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.hlj.dao.mybatis.demo.SonMapper">
<select id="extendMethod" resultType="com.hlj.entity.db.demo.DemoEntity">
select * from demo_entity d where d.id = 4
</select>
<select id="findById3" resultType="com.hlj.entity.db.demo.DemoEntity">
select * from demo_entity d where d.id = 3
</select>
</mapper>
public interface DemoEntityService {
List<DemoEntity> mapperExtend();
}
@Service
@Slf4j
public class DemoEntityServiceImpl implements DemoEntityService {
@Resource
private FatherMapper fatherMapper;
@Resource
private SonMapper sonMapper;
@Override
public List<DemoEntity> mapperExtend() {
List<DemoEntity> demoEntities = new ArrayList<>();
demoEntities.add(fatherMapper.findById1());
demoEntities.add(fatherMapper.extendMethod());
demoEntities.add(sonMapper.findById1()); //继承的父类
demoEntities.add(sonMapper.extendMethod());//重写的方法
demoEntities.add(sonMapper.findById3());//自己的方法
return demoEntities;
}
}
@ApiResponses(value = {
@ApiResponse(code = 200, message = "访问正常"),
@ApiResponse(code = 301, message = "逻辑错误"),
@ApiResponse(code = 500, message = "系统错误"),
@ApiResponse(code = 401, message = "未认证"),
@ApiResponse(code = 403, message = "禁止访问"),
@ApiResponse(code = 404, message = "url错误")
})
@Api(description = "demo控制器")
@Controller
@RequestMapping("mapper")
public class DemoController {
@Autowired
private DemoEntityService demoEntityService;
@ApiOperation(notes = "mapper继承",
value = "mapper继承",
consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE,
produces = MediaType.APPLICATION_JSON_VALUE,
response = DemoEntity.class)
@GetMapping("extend")
@ResponseBody
public ResponseBean mapperExtend(){
try {
return ResponseBean.buildSuccess(demoEntityService.mapperExtend());
}catch (AppException e){
ExceptionLogUtils.log(e,this.getClass() );
return ResponseBean.buildFailure(e.getCode(),e.getMessage());
}catch (Exception e){
ExceptionLogUtils.log(e,this.getClass() );
return ResponseBean.buildFailure(e.getMessage());
}
}
}
{
"success": true,
"result": [
{
"id": 1,
"name": "HealerJean",
"age": null,
"cdate": "2019-05-14T18:00:39.000+0000",
"udate": "2019-05-14T10:00:39.000+0000"
},
{
"id": 2,
"name": "DemoEntity(id=null, name=HealerJean, age=null, cdate=null, udate=null)1",
"age": null,
"cdate": "2019-05-14T18:00:39.000+0000",
"udate": "2019-05-14T10:00:39.000+0000"
},
{
"id": 1,
"name": "HealerJean",
"age": null,
"cdate": "2019-05-14T18:00:39.000+0000",
"udate": "2019-05-14T10:00:39.000+0000"
},
{
"id": 4,
"name": "DemoEntity(id=null, name=HealerJean, age=null, cdate=null, udate=null)1",
"age": null,
"cdate": "2019-05-14T18:01:05.000+0000",
"udate": "2019-05-14T10:01:06.000+0000"
},
{
"id": 3,
"name": "HealerJean",
"age": null,
"cdate": "2019-05-14T18:01:05.000+0000",
"udate": "2019-05-14T10:01:06.000+0000"
}
],
"message": "",
"code": "200",
"date": "1557889965987"
}
感兴趣的,欢迎添加博主微信
哈,博主很乐意和各路好友交流,如果满意,请打赏博主任意金额,感兴趣的在微信转账的时候,备注您的微信或者其他联系方式。添加博主微信哦。
请下方留言吧。可与博主自由讨论哦
微信 | 微信公众号 | 支付宝 |
---|---|---|
![]() |
![]() |
![]() |